CN101520324A - Dam-break disaster displacement quantitative prewarning method of tailings reservoir - Google Patents
Dam-break disaster displacement quantitative prewarning method of tailings reservoir Download PDFInfo
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- CN101520324A CN101520324A CN200910080187A CN200910080187A CN101520324A CN 101520324 A CN101520324 A CN 101520324A CN 200910080187 A CN200910080187 A CN 200910080187A CN 200910080187 A CN200910080187 A CN 200910080187A CN 101520324 A CN101520324 A CN 101520324A
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- mine tailing
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- tailings reservoir
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Abstract
The invention relates to a dam-break disaster displacement quantitative prewarning method of a tailings reservoir, which comprises the following steps: S1, dam-break disaster prewarning index safety factors of the tailings reservoir are designed; S2, under the prewarning index safety factors, the perwarning displacement of monitoring points of the tailings reservoir is calculated by using a finite element method; S3, the actual displacement of the monitoring points of the tailings reservoir is measured; S4, if the actual displacement is greater than or equal to the perwarning displacement, the perwarning is carried out. The dam-break disaster displacement three-stage quantitative prewarning method of the tailings reservoir has the advantages of quantification, practicability, high precision, wide engineering application prospect, and the like.
Description
Technical field
The present invention relates to a kind of metal or non-metal mine mine tailing storehouse dam break disaster alarm technology, relate in particular to dam-break disaster displacement quantitative prewarning method of tailings reservoir.
Background technology
The mine tailing storehouse be meant build a dam that the interception mouth of a valley or exclosure constitute, sort the mine tailing place that discharge the back in order to store up metal or non-metal mine ore, it is the necessary facility of keeping the mine ordinary production, it also is the major hazard source of metal or non-metal mine, in case mine tailing storehouse dam break, bring about great losses for downstream the people's lives and property safety, cause severe contamination to surrounding enviroment.
Displacement is that whether the most direct index takes place reflection mine tailing storehouse dam break disaster.In the engineering of mine tailing storehouse the displacement index being monitored, and implement disaster alarm effectively, is the important measures that reduce mine tailing storehouse dam break disaster.Simultaneously, the displacement total amount before and after the dam break of mine tailing storehouse is less, is the millimeter magnitude, prevents that mine tailing storehouse dam break disaster from quantitative, rational, high-precision displacement method for early warning need taking place.
Existing mine tailing warehouse compartment moves in the method for early warning, mostly by drawing the graph of mine tailing storehouse dam body displacement, understand the change procedure of monitoring point displacement amount intuitively, and the Changing Pattern or the development trend of the displacement that monitors of the experience analysis of utilizing engineering technical personnel, thereby judge the safety case in mine tailing storehouse.At present, still there is not effective dam-break disaster displacement quantitative prewarning method of tailings reservoir.Shortcomings such as therefore, above-mentioned prior art exists and is subjected to the subjectivity factor affecting more, and operability is poor, lack scientific basis, the early warning precision is low.
Summary of the invention
Purpose of the present invention just is to provide a kind of dam-break disaster displacement quantitative prewarning method of tailings reservoir, to solve above-mentioned defective of the prior art.
For achieving the above object, technical scheme of the present invention is to adopt a kind of dam-break disaster displacement quantitative prewarning method of tailings reservoir, and this method comprises:
S1, setting mine tailing storehouse dam break disaster alarm index safety coefficient;
S2, under described warning index safety coefficient, utilize Finite Element Method, calculate the early warning displacement of monitoring point, mine tailing storehouse;
The actual displacement amount of S3, measurement monitoring point, mine tailing storehouse;
S4, if described actual displacement amount more than or equal to described early warning displacement, then carry out early warning.
Wherein, the warning index safety coefficient of described step S1 comprises:
One-level warning index safety coefficient is set at 1;
Secondary warning index safety coefficient, according in " mine tailing storehouse emergency decree " about the regulation of different grade mine tailings storehouse safety of dam body coefficient, determine;
Three grades of warning index safety coefficient are set at 2.
Dam-break disaster displacement quantitative prewarning method of tailings reservoir of the present invention is not only practical, precision is high, future in engineering applications is wide, and has a quantification, advantages such as authentication method advanced person, calculating is accurate, future in engineering applications is wide, can be of great practical significance for bargh's mine tailing library management for the forecast of metal and nonmetal mill tailings storehouse dam break Risk-warning provides important evidence.
Description of drawings
Fig. 1 is the process flow diagram of dam-break disaster displacement quantitative prewarning method of tailings reservoir of the present invention;
Fig. 2 is the finite element grid synoptic diagram of mine tailing storehouse one dam slope;
Fig. 3 is the finite element method calculation flow chart;
Fig. 4 is the early warning displacement of monitoring point of the present invention and the graph of a relation of reduction coefficient.
Embodiment
Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
Dam-break disaster displacement quantitative prewarning method of tailings reservoir of the present invention as shown in Figure 1, may further comprise the steps:
S1, setting mine tailing storehouse dam break disaster alarm index safety coefficient.
Warning index safety coefficient of the present invention comprises one-level warning index safety coefficient, secondary warning index safety coefficient, three grades of warning index safety coefficient.Wherein, one-level warning index safety coefficient is set at 1, three grades of warning index safety coefficient are set at 2, and secondary warning index safety coefficient is determined about the regulation of different grade mine tailings storehouse safety of dam body coefficient in (AQ2006-2005) by " mine tailing storehouse emergency decree ", and is as shown in table 1 below.
Table 1 secondary warning index safety coefficient
| The grade on dam | 1 | 2 | 3 | 4、5 |
| Safety coefficient | 1.30 | 1.25 | 1.20 | 1.15 |
S2, under above-mentioned warning index safety coefficient, utilize Finite Element Method, calculate the early warning displacement of monitoring point, mine tailing storehouse.
Fig. 2 is the finite element grid synoptic diagram of mine tailing storehouse one dam slope, as shown in Figure 1, supposes that the A point is a Gauss point of a certain unit, below about the point stress analysis be example all with the A point.If the Shear Strength Index of mine tailing be c and
, then Tu shearing strength is:
In the formula, τ
fBe shearing strength; σ is a compressive stress; C is a cohesive strength;
Be angle of internal friction.Suppose that the shearing strength of mine tailing carries out reduction with a certain reduction coefficient F by following formula:
When reduction coefficient hour, the shearing strength of mine tailing is higher, whole dam slope is in elastic stage substantially.Increase reduction coefficient then gradually, then the shearing strength of mine tailing reduces gradually, recomputates the displacement field of tailing dam under this safety coefficient, and at this moment, being in flexible scope in the dam slope can corresponding minimizing.As for the A point, when reduction coefficient is increased to a certain bigger value, can no longer be in elastic stage, its mole-coulomb strength envelope can be displaced downwardly to the stress Mohr Circle of Plastic and intersect.
When reduction coefficient continuation increase, the shearing strength of mine tailing further reduces, and the plastic zone of dam slope can further increase; When reduction coefficient was increased to a certain numerical value, the plastic zone formed the zone that is communicated with, and mine tailing along this shear surface not convergent plasticity detrusion takes place.At this moment, think that dam slope destroys, strength reduction factor is promptly thought the general safety coefficient of mine tailing storehouse dam slope.
Utilize calculation process shown in Figure 3, with the deadweight of whole tailing dam as external load, with tailing dam intensity under the current reduction coefficient as stiffness matrix, set up the balance equation of finite element method, solving an equation obtains the displacement field of tailing dam under the safety coefficient F, promptly obtains the monitoring point displacement amount under this safety coefficient.
The actual displacement amount of S3, measurement monitoring point, mine tailing storehouse.
S4, if above-mentioned actual displacement amount more than or equal to above-mentioned early warning displacement, then carry out early warning.
Fig. 4 is the early warning displacement of monitoring point, mine tailing of the present invention storehouse and the standard drawing of reduction coefficient (warning index safety coefficient), nonlinear relationship according to the early warning displacement and the safety of dam body coefficient of monitoring point, mine tailing storehouse, actual displacement amount to the monitoring point, mine tailing storehouse of actual measurement is judged, if the actual displacement amount more than or equal to the early warning displacement, is then carried out early warning.
Authentication method advanced person of the present invention, calculate accurately, future in engineering applications is wide, can provide important evidence for metal or the forecast of non-metal mine mine tailing storehouse dam break Risk-warning, be of great practical significance for bargh's mine tailing library management.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (2)
1, a kind of dam-break disaster displacement quantitative prewarning method of tailings reservoir is characterized in that, this method comprises:
S1, setting mine tailing storehouse dam break disaster alarm index safety coefficient;
S2, under described warning index safety coefficient, utilize Finite Element Method, calculate the early warning displacement of monitoring point, mine tailing storehouse;
The actual displacement amount of S3, measurement monitoring point, mine tailing storehouse;
S4, if described actual displacement amount more than or equal to described early warning displacement, then carry out early warning.
2, dam-break disaster displacement quantitative prewarning method of tailings reservoir as claimed in claim 1 is characterized in that, the warning index safety coefficient of described step S1 comprises:
One-level warning index safety coefficient is set at 1;
Secondary warning index safety coefficient, according in " mine tailing storehouse emergency decree " about the regulation of different grade mine tailings storehouse safety of dam body coefficient, determine;
Three grades of warning index safety coefficient are set at 2.
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| CN200910080187A CN101520324A (en) | 2009-03-24 | 2009-03-24 | Dam-break disaster displacement quantitative prewarning method of tailings reservoir |
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| CN200910080187A CN101520324A (en) | 2009-03-24 | 2009-03-24 | Dam-break disaster displacement quantitative prewarning method of tailings reservoir |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782454B (en) * | 2009-12-25 | 2011-06-29 | 重庆大学 | Breakdown testing device for mine waste reservoir |
| CN102494668A (en) * | 2011-12-05 | 2012-06-13 | 中国有色金属长沙勘察设计研究院有限公司 | Safety monitoring method of tailing dam |
| CN102878966A (en) * | 2012-10-13 | 2013-01-16 | 云南新立有色金属有限公司 | Method for monitoring movement of dam body of five-level tailings pond |
| CN105444804A (en) * | 2015-06-25 | 2016-03-30 | 辽宁有色勘察研究院 | Tailing pond online safety monitoring and comprehensive early-warning system |
| CN105740607A (en) * | 2016-01-25 | 2016-07-06 | 河海大学 | Method for calculating life loss caused by dam-break flood |
| CN109706980A (en) * | 2018-12-25 | 2019-05-03 | 商洛学院 | A kind of Safety of Tailings Dam monitoring system |
| CN111241757A (en) * | 2020-01-10 | 2020-06-05 | 中核第四研究设计工程有限公司 | Dam break three-dimensional numerical simulation method for uranium tailing pond based on computational fluid mechanics |
-
2009
- 2009-03-24 CN CN200910080187A patent/CN101520324A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782454B (en) * | 2009-12-25 | 2011-06-29 | 重庆大学 | Breakdown testing device for mine waste reservoir |
| CN102494668A (en) * | 2011-12-05 | 2012-06-13 | 中国有色金属长沙勘察设计研究院有限公司 | Safety monitoring method of tailing dam |
| CN102878966A (en) * | 2012-10-13 | 2013-01-16 | 云南新立有色金属有限公司 | Method for monitoring movement of dam body of five-level tailings pond |
| CN105444804A (en) * | 2015-06-25 | 2016-03-30 | 辽宁有色勘察研究院 | Tailing pond online safety monitoring and comprehensive early-warning system |
| CN105740607A (en) * | 2016-01-25 | 2016-07-06 | 河海大学 | Method for calculating life loss caused by dam-break flood |
| CN105740607B (en) * | 2016-01-25 | 2018-07-27 | 河海大学 | A kind of dam bursting flood causes the computational methods of human loss |
| CN109706980A (en) * | 2018-12-25 | 2019-05-03 | 商洛学院 | A kind of Safety of Tailings Dam monitoring system |
| CN111241757A (en) * | 2020-01-10 | 2020-06-05 | 中核第四研究设计工程有限公司 | Dam break three-dimensional numerical simulation method for uranium tailing pond based on computational fluid mechanics |
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Application publication date: 20090902 |